CYLINDER FUEL INJECTION TYPE SPARK IGNITION INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To prevent the deterioration in a combustion and exhaust emission by forming a favorable homogeneous mixture in a cylinder, even in an engine cooling time, in a cylinder fuel injection type spark ignition internal combustion engine enforcing a homogeneous combustion. SOLUTION: A homogeneous combustion jetting a fuel in an intake stroke mainly is enforced and the valve opening timing of an intake valve is slower than the valve closing timing of an exhaust valve and is after an intake upper dead point (step 103) and a fuel injection is started within the term from the valve closing timing of the exhaust valve to the valve opening timing of the intake valve at the homogeneous combustion time (step 105).